Majordomo is a program which automates the management of Internet
mailing lists. Commands are sent to Majordomo via electronic mail to
handle all aspects of list maintainance. Once a list is set up,
virtually all operations can be performed remotely, requiring no
intervention upon the postmaster of the list site.

majordomo - n: a person who speaks, makes arrangements, or takes
charge for another. From latin "major domus" - "master of the
house".